Hi, I have the complete licensed version of CC on my phone, a Huawei P10 Lite.
I have a local folder into internal memory that's synced through ResislioSync with my Calibre book folder on desktop client.

There are two ways to select a different book folder in CC, in Cloud section and in Format and Folders, but either way the phone shows an empty file browser screen, with no possibility of navigation, there is a way to fix that issue?